Patents by Inventor Roy H. Sjoberg

Roy H. Sjoberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5662948
    Abstract: A molding tool is provided that has a cavity half and a core half for molding a workpiece. The molding tool has a male trimpiece that is attached to the cavity half of the molding tool via a plurality of securing devices for removal of the male trimpiece when worn. A female trimpiece is attached to the core half of the molding tool via a plurality of securing devices for removal of the female trimpiece when worn. An adjustable stop plate is also provided that is attached to the core half of the molding tool via a plurality of securing devices. The stop plate is disposed around, and is adjacent to, the female trimpiece. The stop plate is vertically adjustable to provide for varying thickness of the workpiece. A trimline retention reservoir is also disposed in the core half of the molding tool between the female trimpiece and the stop plate for receiving the male trimpiece when the molding tool is in the closed position. The thicknesses of each trimpiece can be varied so as to change the size of the workpiece.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: September 2, 1997
    Assignee: Chrysler Corporation
    Inventor: Roy H. Sjoberg
  • Patent number: 5538781
    Abstract: An improved reinforcing fabric that is woven of alternating fiber yarns of polyaramid, carbon and glass in both the warp and the weft directions such that a fabric of superior impact, tensile, compression and flexural properties is obtained.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: July 23, 1996
    Assignee: Chrysler Corporation
    Inventors: Nippani R. Rao, Roy H. Sjoberg
  • Patent number: D392599
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: March 24, 1998
    Assignee: Chrysler Corporation
    Inventors: Roy H. Sjoberg, Jr., Herbert J. Helbig